Kabul , Afghanistan -LRB- CNN -RRB- -- Taliban militants beheaded two children in southern Afghanistan , a provincial governor 's office said .

The beheadings occurred in Kandahar province , the provincial governor 's office said Monday .

One of those slain was a 10-year-old boy . The other was age 16 .

A press release issued by the office said the militants caught and beheaded the 10-year-old Sunday after he had collected food waste from a trash bin in the area of a security checkpoint .

There were no immediate details about the 16-year-old .

The Taliban denied any involvement in the beheadings , according to spokesman Qari Yousuf Ahmadi . He said Taliban fighters would never do such a thing , but said the group 's civilian casualty commission would investigate .

Insurgents have carried out frequent attacks on security forces across Afghanistan in recent months amid a spring offensive by the Taliban .

Earlier today , Taliban fighters armed with guns and explosives clashed with security forces after taking over a building near the airport in the Afghan capital of Kabul . The fighting ended with all seven attackers dead , Afghan officials said .

The Taliban said the attack was intended to target Americans in Kabul International Airport , one part of which is used by military forces and another by civilians , the officials said .

In eastern Afghanistan , a service member with NATO 's International Security Assistance Force died in a bombing on Monday , the latest in a string of coalition deaths . Eighteen coalition soldiers have died in June so far . At least nine of them are Americans .

CNN 's Masoud Popalazi reported from Kabul , Afghanistan . Joe Sterling reported from Atlanta

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The reported beheadings occurred in Kandahar province

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The Taliban has launched a spring offensive

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A coalition soldier was killed in a bombing in eastern Afghanistan

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Seven people who staged an attack in Kabul have been killed